An examination showed that the metal was solid with a few small holes.
Terne metal roof paint.
Terne is a mild steel with a coating of zinc and tin alloy to protect the steel from rust.
Discolouration due to this is an aesthetic problem only.
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During this hot dip process an alloy of lead and tin is melted.
Our metal roof is made of terne metal.
Water resistant metal roofing paint for example can be of great value if you live in a rainy area.
Terne z t alloy coated products are essentially maintenance free with no protective surface painting or treatment required.
For pricing and availability.
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Terne metal roofs are extremely long lasting but because they look very similar to galvanized metal a person can unknowingly invite problems if they use the wrong paint.
It had been painted over the years with a regular roof paint.
Terne is best painted with an oil based paint.
Tin matte versus historic and current terne coating.
Choose a paint that s right for your metal roof.
Galvanized roofs require the use of a different paint than what is used on terne metal.
Another mistake is to forget or ignore using a sealant before the application of the metal paint.
Historic terne metal was commonly manufactured in a manual production sequence.
Subsequently the stainless copper or steel strip is dipped in that melted metal.
This is why when you are considering painting your metal roofing it makes sense to go for specific paints for the metal roof.
As you can see from photo a the paint had peeled off and the roof rusted.
Where the metal seams had bent the paint collected as hard blocks.
I had a 1922 standing seam terne metal roof with multiple peeling layers and have successfully removed all multiple prior coatings with a two step method.
Galvanized metal roofs are usually painted with acrylic based paint.
Some historical homes have terne metal roofs and these need to be painted with oil based paint.
To avoid staining due to oxides or chemical reaction debris should be removed promptly.
The terne coating does not accommodate fungal growth or lichen.
The company was founded in the early 1800 s and had changed hands a number of times since then.
Read more about the history of terne metal on wikipedia.
1 a wagner power steamer model 705 bought for about 50 at home depot.